Source: doc.rust-lang.org (std library reference) · crates.io database dump, 2026-07-25 (crates directory)Contact
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All 305,250 crates, alphabetically

Data as of 2026-07-25 (crates.io database dump, timestamp 2026-07-25T02:00:36Z). Source: crates.io · db-dump.tar.gz · methodology & corrections.

paulimerPauli and Clifford algebra for quantum computing645MIT paulingA pure Rust library for canonical resonance structure identification in molecules.534MITScience pauliverseFast stabilizer simulation434MIT pausThird Time stopwatch daemon. Work as long as you want, earn break time as you go, spend it whenever.32MITCommand line utilities pausable-tokioA fork of tokio that adds a runtime-controllable pause/resume primitive on its clock. Drop-in replacement for tokio with a few…17MITAsynchronousNetwork programming pausable_clockA source of time information that can be paused and resumed13,335MIT OR Apache-2.0ConcurrencyDate and time pausable_futurePausable and resumable future, useful in background tasks.5,774MITAsynchronous pausePause linux pipes for certain amount of time before continuing.1,947non-standard pause_consolePauses the console8,204MIT OR Apache-2.0Command line utilities pav_regressionThe pair adjacent violators algorithm for isotonic regression70,313LGPL-3.0-or-later pavanPavan — aerodynamics engine for atmosphere, airfoils, panel methods, VLM, compressible flow, stability, propulsion, and CFD156GPL-3.0ScienceSimulation pavaoRust client library for SMB 2/3 based on libsmbclient.70,903MITNetwork programming pavao-srcSource of libsmbclient and logic to build vendored pavao.3,343MITExternal FFI bindingsNetwork programming pavao-sysffi bindings for libsmbclient. Use Pavao to access Samba shares from Rust.35,247MITExternal FFI bindingsNetwork programming pavctlPavis CLI25Apache-2.0 pavePAVED documentation tool - structured docs optimized for AI agents25MIT pavedA simple platform agnostic path representation2,127MITFilesystemParsing tools paverA path begins.1,487MIT pavexA framework for building API services and web applications in Rust.93,917Apache-2.0AsynchronousNetwork programming pavex-authA core crate of the pavex ecosystem. Watch this space.1,447Apache-2.0 pavex_bp_schemaThe schema used to (de)serialize a Pavex Blueprint96,418Apache-2.0 pavex_builderA core crate of the pavex ecosystem. Watch this space.1,521MIT OR Apache-2.0 pavex_cliThe companion CLI for Pavex, a Rust framework to build API services and web applications.73,192Apache-2.0 pavex_cli_clientA convenient Rust interface to execute Pavex CLI commands.86,378Apache-2.0 pavex_cli_depsAn internal crate to share some dependency management logic between Pavex's CLIs, `pavex` and `pavexc`.29,216Apache-2.0 pavex_cli_diagnosticAn internal crate to build rich diagnostic messages for Pavex's CLIs.10,156Apache-2.0 pavex_cli_flockAn internal crate to share file-locking logic between Pavex's CLIs, `pavex` and `pavexc`.10,027Apache-2.0 pavex_cli_shellAn internal crate to share a global shel instance between Pavex's CLIs and their library dependencies.11,081Apache-2.0 pavex_macrosProcedural macros for the Pavex framwork.93,138Apache-2.0 pavex_matchitA fork of matchit, to get some unreleased fixes in Pavex.18,383MIT AND BSD-3-ClauseAlgorithmsNetwork programming pavex_mietteA custom Miette theme for Pavex CLI errors.74,653Apache-2.0 pavex_reflectionUtility types when working with compile-time reflection in Rust91,723Apache-2.0 pavex_runtimeA core crate of the pavex ecosystem. Watch this space.1,548MIT OR Apache-2.0 pavex_sessionHTTP sessions support for Pavex29,896Apache-2.0 pavex_session_memory_storeAn in-memory session store compatible with `pavex-session`26,251Apache-2.0 pavex_session_redisSession store for `pavex-session` backed by Redis or Redis-compatible databases (e.g. Valkey).790Apache-2.0 pavex_session_sqlxSession stores for `pavex-session` backed by `sqlx`22,054Apache-2.0 pavex_tracingThe official integration between `tracing` and the Pavex framework.75,625Apache-2.0 pavexcThe compiler powering Pavex73,778Apache-2.0 pavexc_attr_parserA parser to extract Pavex diagnostic attributes from the output of `rustdoc-json`.8,191Apache-2.0 pavexc_cliA CLI interface for the Pavex compiler.69,143Apache-2.0 pavexc_cli_clientA convenient Rust interface to execute pavexc CLI commands.73,455Apache-2.0 pavexc_rustdoc_typesThe slimmed down schema used by pavexc to work with rustdoc's JSON output20,300Apache-2.0 pavisReserved for the Pavis Service Mesh Proxy.27Apache-2.0 pavis-cliPavis CLI25Apache-2.0 pavis-coreReserved for the Pavis Core.336Apache-2.0 pavis-pvsReserved for the Pavis PVS.23Apache-2.0 pavisePlaceholder in case PQShield wants to use this2,695non-standard pavlokA client library for communicating with the Pavlok API2,775MIT pavlok-cliA cli for communicating with the Pavlok API1,576MIT pavlok-oauthA library for Pavlok OAuth.9,824MIT pavo-commonCommon Types for the Pavo Framework.4,034MITEmbedded developmentExternal FFI bindings pavo-traitsTraits for the Pavo Framework.12,693MITEmbedded developmentExternal FFI bindings pavucontrolrsA TUI (curses) clone of pavucontrol written in rust2,775MIT OR Apache-2.0Command line utilities pawCLI argument parser.2,297,512MIT OR Apache-2.0Command-line interfaceCommand line utilities paw-attributesProc Macro attributes for the Paw crate.2,302,580MIT OR Apache-2.0Command-line interfaceCommand line utilities paw-candleCandle-based inference runtime for ProgramAsWeights98MIT paw-coreCore types, API client, and cache management for ProgramAsWeights139MIT paw-llamacppllama.cpp inference runtime for ProgramAsWeights (experimental)63MIT paw-rawTraits to implement custom Paw implementations2,292,819MIT OR Apache-2.0Command-line interfaceCommand line utilities paw-rsProgramAsWeights Rust SDK — easy-to-use API for PAW inference89MIT paw-structoptStructopt support for the Paw crate.12,004MIT OR Apache-2.0Command-line interfaceCommand line utilities pawanPawan (पवन) — CLI coding agent binary730MITCommand line utilitiesDevelopment tools pawan-aegisPawan-Aegis integration — generate pawan.toml from aegis manifests286MIT pawan-apiHTTP API server for Pawan — Axum + SSE streaming296MIT pawan-corePawan (पवन) — Core library: agent, tools, config, healing1,110MITCommand line utilitiesDevelopment tools pawan-mcpPawan MCP client integration — connect to MCP servers and bridge tools888MIT pawan_artA library for modeling artistic concepts1,531MIT pawawwewisma wewy sewious wibwawy fow stwuctuwed concuwwency, i pwomise :36,8430BSDConcurrency pawbA command-line tool for clients making it easy to connect over HexPawb3,826BSD-3-ClauseCryptographyNetwork programming pawc🐾 PawScript interpreter5,022MIT pawdProcess analysis & watcher daemon2,706MIT pawdistDynamic test distribution system that solves Playwright's static sharding imbalances622MIT pawerA rust library to doc Calculus of Construction805MIT OR Apache-2.0 pawer_coreA rust library to doc Calculus of Construction1,080MIT OR Apache-2.0 pawfetchNeofetch with LGBTQ+ pride flags!197MIT pawkitPawKit is a mninimal game engine toolkit, written in Rust, with support for C, C++, Godot, and Lua.492MPL-2.0 pawkit-bitarrayA dynamically sized bit array1,125MPL-2.0 pawkit-cPawKit's C(++) bindings1,812MPL-2.0 pawkit-crockfordA small library for serializing to/from Crockford Base323,086MPL-2.0 pawkit-fsPawKit's filesystem module2,061MPL-2.0 pawkit-futuresFuture utils for PawKit.1,691MPL-2.0 pawkit-holy-arrayA small library implemnenting a freelist3,157MPL-2.0 pawkit-inputPawKit's input module1,631MPL-2.0 pawkit-internerMultithreaded string interner for PawKit735MPL-2.0 pawkit-loggerPawKit's logging module3,389MPL-2.0 pawkit-luaLua bindings for pawkit1,341MPL-2.0 pawkit-netPawKit's networking module2,539MPL-2.0 pawkit-net-httpA cross platform wrapper for HTTP requests1,833MPL-2.0 pawkit-net-signalingProvides the signaling functionality for PawKit's WebRTC networking.2,768MPL-2.0 pawkit-net-websocketA websocket wrapper for PawKit2,989MPL-2.0 pawlA resumable step sequencer for multi-step workflows163MITCommand line utilitiesDevelopment tools pawletteA work in progress colors library for video441MIT pawnAn unchecked borrow-like operation for Cells.3,245MITNo standard libraryRust patterns pawordA fast CLI password generator written in Rust23MITCommand line utilities pawprintA simple web app for inspecting TLS / HTTP/2 fingerprints3,808AGPL-3.0CryptographyNetwork programming pawsA very simple, bring-your-own-backend UI layout library built for quick prototyping.10,978MITGame developmentGUI paxThe fastest JavaScript bundler in the galaxy.14,820MITCommand line utilitiesDevelopment tools pax-cartridgeStatic program definition container for Pax programs, intended to be patched during compilation103,126MIT OR Apache-2.0 pax-chassis-commonShared resources for Pax Chassis82,852MIT OR Apache-2.0 pax-chassis-iosPlatform-specific chassis allowing Pax cartridges to be executed as native iOS apps76,890MIT OR Apache-2.0 pax-chassis-macosPlatform-specific chassis allowing Pax cartridges to be executed as native macOS apps124,462MIT OR Apache-2.0 pax-chassis-webPlatform-specific chassis allowing Pax cartridges to be executed as Web apps118,283MIT OR Apache-2.0 pax-cliCommand line interface tool for developing, packaging, and managing Pax projects108,480MIT OR Apache-2.0 pax-compilerCompiler APIs for parsing and building Pax projects into application executables143,226MIT OR Apache-2.0 pax-coreCore shared runtime and rendering engine for Pax61,538MIT OR Apache-2.0 pax-designerVector design tool for developing Pax user interfaces20,173MIT OR Apache-2.0 pax-designtimeDebug-mode-style extension to the Pax Engine runtime, enabling runtime introspection and manipulation of definitions as needed…34,358MIT OR Apache-2.0 pax-engineRoot import entry-point for using Pax in a Rust program68,541MIT OR Apache-2.0 pax-exampleExample and development app for the Pax monorepo and compiler43,863MIT OR Apache-2.0 pax-generationTools for generating Pax with LLMs30,705MIT OR Apache-2.0 pax-kitMain entrypoint for building with Pax16,649MIT OR Apache-2.0 pax-langPax language parser120,947MIT OR Apache-2.0 pax-language-serverLanguage Server for Pax Language89,791MIT OR Apache-2.0 pax-macroMacros for Pax, used both for parser codegen and for showing Pax where to attach to Rust code142,670MIT OR Apache-2.0 pax-manifestDefinition container for an entire Pax cartridge98,675MIT OR Apache-2.0 pax-messageShared message structs used by Pax runtimes165,843MIT OR Apache-2.0 pax-pixelsWGPU rendering library for the pax framework1,476MIT OR Apache-2.0 pax-properties-coproductStatic container for program-variable data structures and polymorphic components57,471MIT OR Apache-2.0 pax-runtimeCore shared runtime and rendering engine for Pax84,167MIT OR Apache-2.0 pax-runtime-apiUserland constructs used at the runtime API boundary of Pax Engine151,613MIT OR Apache-2.0 pax-stdStandard library for Pax, including layouts, drawing primitives, and form controls129,113MIT OR Apache-2.0 pax-std-primitivesPrimitives crate for Pax's standard library100,712MIT OR Apache-2.0 paxakosRust implementation of Paxos consensus algorithm18,328GPL-3.0-onlyNetwork programming paxcA compiler for the pax DSL, producing Power Automate cloud flow definitions40MITCommand line utilitiesCompilers paxciiTransform images and videos to ascii3,351MIT paxforthPax Forth programming language for Pax Consola, a development environment for vintage computers and consoles.1,652MIT paxitPaxit is a flexible Rust library for compressing and decompressing files using various algorithms, with a modular design that…4,408MIT paxlangPax is a language for computer graphics and user interfaces.1,550non-standard paxosa well-tested implementation of the CASPaxos protocol for the sled lightweight database kit5,821MIT/Apache-2.0 paxos-rustA lightweight implementation of the Paxos Consensus Algorithm5,127non-standard payPayment related SDK supports payment with cryptocurrencies, including Bitcoin, Solona, Kaspa, etc., as well as legal currency…1,580MIT OR Apache-2.0 pay-cliCLI for Pay. x402 payment stack for AI agents -- direct payments, metered tabs, HTTP 402 paywalls. USDC on Base.212MIT pay-gatex402 payment gateway. Monetizes any HTTP API for AI agents. Part of the Pay x402 stack. USDC on Base.154non-standardCommand line utilitiesWeb programming::HTTP server pay-respectsCommand suggestions, command-not-found and thefuck replacement written in Rust36,969AGPL-3.0-or-laterCommand line utilities pay-respects-module-request-aiAI request module for the pay-respects CLI tool10,858AGPL-3.0-or-later pay-respects-module-runtime-rulesRuntime rules module for the pay-respects CLI tool8,297AGPL-3.0-or-later pay-respects-parserCompile time rule parser for the pay-respects CLI tool13,884MPL-2.0 pay-respects-selectSelection UI for the pay-respects CLI tool681MPL-2.0 pay-respects-utilsUtilities for the pay-respects CLI tool9,174MPL-2.0 pay10ad-dumperFeature-rich Android OTA payload dumper written in Rust1,412Apache-2.0Command line utilitiesDevelopment tools pay_uPayU Rest API wrapper12,042MIT payabli_apiRust SDK for payabli_api generated by Fern457non-standard paybackCalculate to resolve debt networks with as few transactions as possible.3,534GPL-3.0-onlyAlgorithmsCommand line utilities payboxpay's sdk. 目前支持支付宝支付和微信支付 Alipay and wechatpay supported for now. Note, not yet tested.2,762Apache-2.0Finance paycheck-utilsA small library and cli tool for estimating net paycheck after withholdings and deductions to compare against a given set of…178MIT paygress-cliPay-per-use compute marketplace using Cashu ecash and Nostr — no accounts, no signups185Apache-2.0Command line utilitiesNetwork programming payjoinPayjoin Library implementing BIP 78 and BIP 77 batching protocols.60,832MITNFAAPI bindingsCryptography::Cryptocurrencies payjoin-cliA command-line Payjoin client for Bitcoin Core11,639MITNFACryptography::CryptocurrenciesNetwork programming payjoin-directoryA store-and-forward and Oblivious Gateway Resource directory server for Async Payjoin6,224MITNFACryptography::CryptocurrenciesNetwork programming payjoin-mailroomCombined Payjoin Directory and OHTTP Relay49MITNFACryptography::CryptocurrenciesNetwork programming payjoin-test-utilsPayjoin test utilities4,534MIT payjpPayjp SDK based on arlyon/async-stripe901MIT OR Apache-2.0API bindings payjp-rsUnofficial Rust SDK for PAY.JP payment API39MITAPI bindings paylioRust client library for the Paylio subscription API56MITAPI bindings payloadExecute cargo commands from your code6,997MIT OR Apache-2.0 payload-loaderProduction-ready Rust loader with cryptography, configuration, and security features24MITCryptographyDevelopment tools payload-offloading-for-awsLarge Payload offloading for AWS.1,008MIT OR Apache-2.0 payload_dumperA fast and efficient Android OTA payload dumper library and CLI3,364Apache-2.0Command line utilitiesCompression payload_packerA standalone tool for generating full and incremental Android OTA payloads for A/B devices.650Apache-2.0Command line utilitiesCompression paymentUnified payment SDK for Rust - Alipay, WeChat Pay, Stripe & more1,616MIT payment-messageOpen Payments - Message Parsing Library7,107Apache-2.0Data structuresDevelopment tools payment-programSchedule one-time and recurring token transfers on Solana9,879ISC payment_kitA modular and extensible library designed to simplify payment processing, including payment creation, status checks, and refunds.1,015Apache-2.0Web programming payment_stringsA package to create payment strings for generating QR Codes in Czech republic and Europe2,759MIT OR Apache-2.0 paymentsA placeholder. If you would like this crate, place get in touch: arlyon/async-stripe1,604MIT payments-rsA Rust library for integrating with multiple payment providers (Stripe, Revolut, LND, Bitvora)147MITAPI bindingsAsynchronous paynowRust support for Paynow Zimbabwe's HTTP API7,634MIT/Apache-2.0 payoffPassive-only ROI tracker for AI coding sessions. Did the session pay off? Measured by what survived in HEAD.48MITCommand line utilitiesDevelopment tools paypalA library to communicate with paypal api4,675MIT paypal-rsA library that wraps the paypal api asynchronously.65,127MIT OR Apache-2.0API bindingsWeb programming::HTTP client paypal-rustRust bindings for the PayPal REST API13,934MIT OR Apache-2.0API bindings paypayopa-sdk-rustRust port of the PayPay OPA SDK17Apache-2.0 payPeerssimple crate testing. For Fun :)5,758MIT payperpayper1,445non-standard payrailProvider-neutral Rust payments facade for Stripe, PayPal, and Mobile Money196MIT OR Apache-2.0API bindingsWeb programming payrail-coreProvider-neutral payment abstractions for PayRail129MIT OR Apache-2.0API bindingsWeb programming payrail-lipilaLipila connector for PayRail Zambia Mobile Money17MIT OR Apache-2.0API bindingsWeb programming payrail-mobile-moneyShared Mobile Money abstractions for PayRail16MIT OR Apache-2.0API bindingsWeb programming payrail-paypalPayPal connector for PayRail16MIT OR Apache-2.0API bindingsWeb programming payrail-stripeStripe connector for PayRail17MIT OR Apache-2.0API bindingsWeb programming payrixRust client for the Payrix payment processing API22MITAPI bindingsWeb programming payrix-macrosProcedural macros for the Payrix SDK97MITAPI bindings payrustPayPal REST API client for Rust31MITAPI bindingsWeb programming paysecRust library related to payment security standards.5,201GPL-3.0 paystackRust package for working with Paystack2,872non-standard paystack-clientA simple Rust client for Paystack payments (initialize & verify).1,024MITAPI bindingsWeb programming::HTTP client paystack-rsPaystack API Wrapper14,994MITAPI bindingsFinance paystack-transactionPaystack Rust Client6,077MIT OR Apache-2.0 paytourCliente Rust para autenticação e consumo da API Paytour (login e passeios)391MITAPI bindingsAuthentication payu-indiaPayU India API Rust SDK.2,670non-standard payupA synchronous + asynchronous payment library for processing payments with rust + stripe.10,027MIT OR Apache-2.0 paywayUnofficial Rust SDK for ABA PayWay Payment Gateway20GPL-3.0-onlyAPI bindings pazckager_clicli for the pazckager core crate1,950MIT pazckager_corepazckager core crate2,674MIT pazckager_json_storageBasic json based db for pazckager2,260MIT paziA fast autojump helper11,939GPL-3.0 pbClient library to work with Pushbullet REST API20,760MIT pb-arenaYet another arena allocator for graph based operations3,479non-standardMemory management pb-asyncAsynchronous client for the PushBullet API1,960MITDevelopment tools::Debugging